Upright vacuum cleaner



FIG. 1 is a front perspective view of an upright vacuum cleaner showing our new design,

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a side elevational view thereof as seen from the right side of FIG. 2. 

The ornamental design for an upright vacuum cleaner, substantially as shown. 